.page-contact {
  --pc-grid: rgba(201, 162, 39, 0.13);
  --pc-hair: rgba(20, 17, 15, 0.14);
  --pc-hair-strong: rgba(20, 17, 15, 0.26);
  background: var(--snow);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  padding: clamp(22px, 3.4vw, 40px) 0 clamp(40px, 6vw, 76px);
}

.page-contact .pc-kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin: 22px 0 18px;
}

.page-contact .pc-kicker-label {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ochre);
}

.page-contact .pc-kicker-label::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 1px;
  margin-right: 10px;
  background: var(--gold);
}

.page-contact .pc-kicker-id {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--grey);
}

.page-contact .pc-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
  max-width: 17em;
}

.page-contact .pc-lede {
  margin: 0 0 clamp(28px, 4vw, 46px);
  max-width: 44em;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.85;
  color: var(--ink-soft);
}

/* 联络卡 */
.page-contact .pc-card {
  position: relative;
  overflow: hidden;
  background-color: var(--ink-green);
  background-image:
    linear-gradient(var(--pc-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--pc-grid) 1px, transparent 1px);
  background-size: 100% 48px, 48px 100%;
  border: 1px solid var(--line-gold);
  color: var(--snow);
}

.page-contact .pc-card::before,
.page-contact .pc-card::after {
  content: "";
  position: absolute;
  width: 44px;
  height: 44px;
  border: 1px solid var(--gold);
  pointer-events: none;
  z-index: 2;
}

.page-contact .pc-card::before {
  top: 12px;
  left: 12px;
  border-right: 0;
  border-bottom: 0;
}

.page-contact .pc-card::after {
  right: 12px;
  bottom: 12px;
  border-top: 0;
  border-left: 0;
}

.page-contact .pc-card-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  max-width: 100%;
  pointer-events: none;
}

.page-contact .pc-card-item {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 26px clamp(20px, 4vw, 34px) 28px;
  border-top: 1px solid var(--line-light);
}

.page-contact .pc-card-item:first-of-type {
  border-top: 0;
}

.page-contact .pc-card-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-contact .pc-card-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.4vw, 19px);
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .pc-card-item:last-of-type .pc-card-value {
  font-size: clamp(14px, 2vw, 16px);
  line-height: 1.65;
}

.page-contact .pc-card-use {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(247, 244, 238, 0.78);
}

.page-contact .pc-card-note {
  margin: 4px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line-light);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(247, 244, 238, 0.62);
}

/* ---------- 章节公共件 ---------- */
.page-contact .pc-sec-head {
  margin-bottom: clamp(26px, 4vw, 48px);
}

.page-contact .pc-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.22;
  margin: 0 0 16px;
  max-width: 20em;
}

.page-contact .pc-sub {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 邮件写作指引 ---------- */
.page-contact .pc-mail {
  padding: clamp(44px, 7vw, 96px) 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-mail-grid {
  display: grid;
  gap: clamp(28px, 5vw, 40px);
}

.page-contact .pc-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .pc-step {
  position: relative;
  margin-left: 15px;
  padding: 0 0 30px 30px;
  border-left: 1px solid var(--pc-hair);
}

.page-contact .pc-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .pc-step-idx {
  position: absolute;
  left: -15px;
  top: -3px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  background: var(--snow);
  border: 1px solid var(--ochre);
  color: var(--ochre);
  font-size: 12px;
}

.page-contact .pc-step-title {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-size: clamp(17px, 2vw, 19px);
  font-weight: 700;
  line-height: 1.5;
}

.page-contact .pc-step-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .pc-figure {
  margin: 0;
  border: 1px solid var(--pc-hair);
  background: var(--stone);
}

.page-contact .pc-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  max-width: 100%;
  filter: saturate(0.92) contrast(1.02);
}

.page-contact .pc-figcap {
  padding: 10px 14px;
  border-top: 1px solid var(--pc-hair);
  background: var(--white);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--grey);
}

/* ---------- 合作方向 ---------- */
.page-contact .pc-coop {
  padding: clamp(44px, 7vw, 96px) 0;
  background: var(--stone);
  border-top: 1px solid var(--pc-hair);
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-coop-list {
  border-top: 1px solid var(--pc-hair-strong);
}

.page-contact .pc-coop-item {
  border-bottom: 1px solid var(--pc-hair-strong);
}

.page-contact .pc-coop-sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  position: relative;
  padding: 20px 46px 20px 0;
  cursor: pointer;
  list-style: none;
}

.page-contact .pc-coop-sum::-webkit-details-marker {
  display: none;
}

.page-contact .pc-coop-sum::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ochre);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--ochre);
}

.page-contact .pc-coop-item[open] .pc-coop-sum::after {
  content: "–";
}

.page-contact .pc-coop-idx {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ochre);
}

.page-contact .pc-coop-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.3;
}

.page-contact .pc-coop-hint {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey);
}

.page-contact .pc-coop-body {
  padding: 0 0 26px;
  max-width: 64ch;
}

.page-contact .pc-coop-body p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-contact .pc-coop-need {
  margin: 18px 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink);
}

.page-contact .pc-need-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .pc-need-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-contact .pc-need-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: var(--ochre);
}

/* ---------- 处理流程 ---------- */
.page-contact .pc-flow-sec {
  padding: clamp(44px, 7vw, 96px) 0;
}

.page-contact .pc-flow {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .pc-flow-step {
  position: relative;
  padding: 0 0 30px 46px;
}

.page-contact .pc-flow-step::after {
  content: "";
  position: absolute;
  left: 15px;
  top: 36px;
  bottom: 0;
  width: 1px;
  background: var(--pc-hair);
}

.page-contact .pc-flow-step:last-child {
  padding-bottom: 0;
}

.page-contact .pc-flow-step:last-child::after {
  display: none;
}

.page-contact .pc-flow-dot {
  position: absolute;
  left: 0;
  top: 0;
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  background: var(--snow);
  border: 1px solid var(--ochre);
  color: var(--ochre);
  font-size: 12px;
}

.page-contact .pc-flow-title {
  margin: 6px 0 8px;
  font-size: clamp(17px, 2vw, 19px);
  font-weight: 700;
  line-height: 1.5;
}

.page-contact .pc-flow-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 收尾索引 ---------- */
.page-contact .pc-next-sec {
  padding: clamp(34px, 5vw, 64px) 0 clamp(52px, 7vw, 96px);
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-next-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.8vw, 28px);
  line-height: 1.3;
}

.page-contact .pc-next-sub {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .pc-next-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-next-link {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: baseline;
  column-gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--pc-hair);
  text-decoration: none;
  color: var(--ink);
  transition: color 0.2s var(--ease);
}

.page-contact .pc-next-idx {
  grid-row: span 2;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-contact .pc-next-text {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
}

.page-contact .pc-next-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--grey);
}

.page-contact .pc-next-link:hover .pc-next-text,
.page-contact .pc-next-link:focus-visible .pc-next-text {
  color: var(--ochre);
}

.page-contact .pc-next-link:focus-visible {
  outline: 2px solid var(--ochre);
  outline-offset: 3px;
}

.page-contact .pc-coop-sum:focus-visible {
  outline: 2px solid var(--ochre);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .pc-next-list {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 44px;
  }
}

@media (min-width: 860px) {
  .page-contact .pc-card {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .pc-card-item {
    border-top: 0;
    border-left: 1px solid var(--line-gold);
    padding-left: clamp(22px, 2.4vw, 30px);
    padding-right: clamp(22px, 2.4vw, 30px);
  }

  .page-contact .pc-card-item:first-of-type {
    border-left: 0;
  }

  .page-contact .pc-flow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    column-gap: 40px;
  }

  .page-contact .pc-flow-step {
    padding: 52px 0 0;
  }

  .page-contact .pc-flow-step::after {
    left: 46px;
    right: -40px;
    top: 15px;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .page-contact .pc-flow-step:last-child::after {
    display: none;
  }

  .page-contact .pc-flow-dot {
    top: 0;
  }

  .page-contact .pc-flow-title {
    margin-top: 0;
  }
}

@media (min-width: 940px) {
  .page-contact .pc-mail-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
    column-gap: clamp(40px, 5vw, 64px);
  }

  .page-contact .pc-coop-body {
    padding-left: 34px;
  }
}